I once owned the NAD C256BEE. Regarding needing a more powerful amp I have two questions. What is your room size and at what position is the volume knob when listening at loudest levels. In my experience when volume knob for this amp is at the 12:00 o'clock position the gain from the preamp stage is driving the amp as hard as I feel comfortable (for amps sake).
Power Amp Question
Question: how to match a power amp to my system using an integrated amp as a preamp.
System:
Triad Gold LCR In-Room Speakers 4-OHM 100-400 watt
Audio Tecnica AT-OC9XL Dual MC cartridge
NAD C356 integrated amp
Rega Aria MK3 (recently added)
Thank You
G